Hi, I know how difficult this is to deal with. I know exactly how stressful this is!! But, your vet said that he might have
multiple myeloma. MIGHT, so this is not definite, your kitty might also have something that is fixable, too. The bone marrow biopsy will give you the truth and will be able to tell you what the deal is and if it's fixable. Two of my cats have had this biopsy done for anemic issues and low WBCs. Guess what, both of them had fixable conditions!!